Class TObjectByteMapDecorator<K>

java.lang.Object
java.util.AbstractMap<K,Byte>
gnu.trove.decorator.TObjectByteMapDecorator<K>
All Implemented Interfaces:
Externalizable, Serializable, Cloneable, Map<K,Byte>

public class TObjectByteMapDecorator<K> extends AbstractMap<K,Byte> implements Map<K,Byte>, Externalizable, Cloneable

Wrapper class to make a TObjectByteMap conform to the java.util.Map API. This class simply decorates an underlying TObjectByteMap and translates the Object-based APIs into their Trove primitive analogs.

Note that wrapping and unwrapping primitive values is extremely inefficient. If possible, users of this class should override the appropriate methods in this class and use a table of canonical values.

Created: Mon Sep 23 22:07:40 PDT 2002
See Also:
  • Field Details

  • Constructor Details

    • TObjectByteMapDecorator

      public TObjectByteMapDecorator()
      FOR EXTERNALIZATION ONLY!!
    • TObjectByteMapDecorator

      public TObjectByteMapDecorator(TObjectByteMap<K> map)
      Creates a wrapper that decorates the specified primitive map.
      Parameters:
      map - the TObjectByteMap to wrap.
  • Method Details

    • getMap

      public TObjectByteMap<K> getMap()
      Returns a reference to the map wrapped by this decorator.
      Returns:
      the wrapped TObjectByteMap instance.
    • put

      public Byte put(K key, Byte value)
      Inserts a key/value pair into the map.
      Specified by:
      put in interface Map<K,Byte>
      Overrides:
      put in class AbstractMap<K,Byte>
      Parameters:
      key - an Object value
      value - an Byte value
      Returns:
      the previous value associated with key, or Integer(0) if none was found.
    • get

      public Byte get(Object key)
      Retrieves the value for key
      Specified by:
      get in interface Map<K,Byte>
      Overrides:
      get in class AbstractMap<K,Byte>
      Parameters:
      key - an Object value
      Returns:
      the value of key or null if no such mapping exists.
    • clear

      public void clear()
      Empties the map.
      Specified by:
      clear in interface Map<K,Byte>
      Overrides:
      clear in class AbstractMap<K,Byte>
    • remove

      public Byte remove(Object key)
      Deletes a key/value pair from the map.
      Specified by:
      remove in interface Map<K,Byte>
      Overrides:
      remove in class AbstractMap<K,Byte>
      Parameters:
      key - an Object value
      Returns:
      the removed value, or Integer(0) if it was not found in the map
    • entrySet

      public Set<Map.Entry<K,Byte>> entrySet()
      Returns a Set view on the entries of the map.
      Specified by:
      entrySet in interface Map<K,Byte>
      Specified by:
      entrySet in class AbstractMap<K,Byte>
      Returns:
      a Set value
    • containsValue

      public boolean containsValue(Object val)
      Checks for the presence of val in the values of the map.
      Specified by:
      containsValue in interface Map<K,Byte>
      Overrides:
      containsValue in class AbstractMap<K,Byte>
      Parameters:
      val - an Object value
      Returns:
      a boolean value
    • containsKey

      public boolean containsKey(Object key)
      Checks for the present of key in the keys of the map.
      Specified by:
      containsKey in interface Map<K,Byte>
      Overrides:
      containsKey in class AbstractMap<K,Byte>
      Parameters:
      key - an Object value
      Returns:
      a boolean value
    • size

      public int size()
      Returns the number of entries in the map.
      Specified by:
      size in interface Map<K,Byte>
      Overrides:
      size in class AbstractMap<K,Byte>
      Returns:
      the map's size.
    • isEmpty

      public boolean isEmpty()
      Indicates whether map has any entries.
      Specified by:
      isEmpty in interface Map<K,Byte>
      Overrides:
      isEmpty in class AbstractMap<K,Byte>
      Returns:
      true if the map is empty
    • putAll

      public void putAll(Map<? extends K,? extends Byte> map)
      Copies the key/value mappings in map into this map. Note that this will be a deep copy, as storage is by primitive value.
      Specified by:
      putAll in interface Map<K,Byte>
      Overrides:
      putAll in class AbstractMap<K,Byte>
      Parameters:
      map - a Map value
    • wrapValue

      protected Byte wrapValue(byte k)
      Wraps a value
      Parameters:
      k - value in the underlying map
      Returns:
      an Object representation of the value
    • unwrapValue

      protected byte unwrapValue(Object value)
      Unwraps a value
      Parameters:
      value - wrapped value
      Returns:
      an unwrapped representation of the value
    • readExternal

      public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException
      Specified by:
      readExternal in interface Externalizable
      Throws:
      IOException
      ClassNotFoundException
    • writeExternal

      public void writeExternal(ObjectOutput out) throws IOException
      Specified by:
      writeExternal in interface Externalizable
      Throws:
      IOException